Arun
Last Activity: 6 Years ago
Dear student
Let a number is such that
* . * . * .
Now even digits (0, 2, 4) occupy odd places
Hence
3!
Now odd digits at even places
3!
Hence total numbers = 3! * 3! = 36
But there are two casss in which 0 is at first place.
Hence 6 divit number = 36 - 2 *3! = 36 - 12 = 24
